Installing Perl Modules in cPanel

Perl Modules are in fact libraries of functions that will help you in your source code. 
By default, the module include path is:

/home/username/perl

To let Perl know how to find the modules, use at the beginning of your script:

#!/usr/bin/perl
use cPanelUserConfig;

or

#!/usr/bin/perlml

The Perl system modules installed by cPanel are listed below. You can manually install the Perl modules that you want.

To install a Perl Module in cPanel:

1. Log into the cPanel account
2. Locate Perl Modules in the SOFTWARE section
3. If you know the exact module name that you want to install, just type its name in the Install a Perl Module edit box and click the Install Now button.
4. If you don’t know the exact module name click the Show Available Modules, look for the desired module, and click the Install link.
5. Click the Go Back button
6. You will see the installed modules in the Installed Perl Module(s) section. 

From the Installed Perl Module(s) section, you can Update, Reinstall, Uninstall and view the docs for each module.

Contact your host if you are getting error messages while installing Perl modules.

Some modules have dependencies, so other modules may be installed with your desired module.

Video tutorial for installing a Perl Module – in this case the String::Diff module:

If you have SSH access you can use perl -v and instmodsh commands for more information.
Examples:

root@web [~]# perl -v

This is perl 5, version 16, subversion 3 (v5.16.3) built for x86_64-linux-thread-multi
(with 34 registered patches, see perl -V for more detail)

Copyright 1987-2012, Larry Wall

Perl may be copied only under the terms of either the Artistic License or the
GNU General Public License, which may be found in the Perl 5 source kit.

Complete documentation for Perl, including FAQ lists, should be found on
this system using "man perl" or "perldoc perl".  If you have access to the
Internet, point your browser at http://www.perl.org/, the Perl Home Page.

root@web [~]# instmodsh
Available commands are:
   l            - List all installed modules
   m    - Select a module
   q            - Quit the program
cmd? l
Installed modules are:
   CPAN
   CPAN::Meta::Requirements
   CPAN::Meta::YAML
   Crypt::PasswdMD5
   DBD::mysql
   DBI
   Digest::MD5
   Digest::SHA1
   Expect
   ExtUtils::MakeMaker
   GnuPG
   IO::Tty
   LWP
   LWP::Protocol::https
   Mozilla::CA
   Net::HTTP
   Perl
   Regexp::Assemble
   Test::Pod
   Test::Simple
   Try::Tiny
   URI
   local::lib
   version
cmd? q
root@web [~]#